ANP (Atrial Natriuretic Peptide) vs GHRP-6
A detailed comparison to help you understand the differences and choose the right peptide for your research goals.
ANP (Atrial Natriuretic Peptide)
ANP is a cardiac hormone released by atrial myocytes in response to stretch. It promotes natriuresis, diuresis, and vasodilation, playing key roles in blood pressure and fluid regulation.
Full details →GHRP-6
Growth Hormone Releasing Peptide 6 (GHRP-6) is one of the first synthetic growth hormone secretagogues discovered. It stimulates significant GH release but is known for causing intense hunger.
Full details →Side-by-Side Comparison
| Aspect | ANP (Atrial Natriuretic Peptide) | GHRP-6 |
|---|---|---|
| Dose Range | 25 mcg–100 mcg | 100 mcg–300 mcg |
| Frequency | 1x daily | 3x daily |
| Cycle Length | 1–4 weeks | 8–12 weeks |
| Route | subcutaneous | subcutaneous |
| Mechanism | Binds to natriuretic peptide receptors (NPR-A) to activate guanylyl cyclase, producing cGMP. This leads to vasodilation, increased kidney filtration, and inhibition of the renin-angiotensin-aldosterone system. | Acts as a ghrelin mimetic, binding to the GHS-R receptor in the pituitary and hypothalamus. Stimulates GH release and also significantly increases appetite by mimicking ghrelin's hunger-signaling effects. |
| Typical Dosage | Clinical use: Carperitide (recombinant ANP) used in Japan for acute heart failure at 0.1mcg/kg/min IV infusion. | Typical dosing: 100-300mcg administered 2-3 times daily. Often combined with GHRH peptides like CJC-1295 for synergistic effects. |
| Administration | Intravenous infusion only for clinical applications. Short half-life (~2 minutes) requires continuous administration. | Subcutaneous injection. Best administered on an empty stomach. The strong hunger response can be beneficial for those trying to gain weight but challenging for cutting. |
| Side Effects | Hypotension (dose-limiting), headache, nausea, and potential arrhythmias at high doses. | Intense hunger (most notable effect), water retention, increased cortisol and prolactin, tingling/numbness, and potential blood pressure changes. |
| Best For |
What They Have in Common
ANP (Atrial Natriuretic Peptide), GHRP-6 are both commonly used for:
Key Differences
Unique to GHRP-6:
Which Has Stronger Evidence?
| Goal | ANP (Atrial Natriuretic Peptide) | GHRP-6 |
|---|---|---|
| Recovery & Healing | medium | medium |
Key Studies
ANP (Atrial Natriuretic Peptide)
- Atrial natriuretic peptide (ANP) modulates stress-induced autophagy in endothelial cells.
Biochimica et biophysica acta. Molecular cell research, 2025
- C-atrial natriuretic peptide (ANP)(4-23) attenuates renal fibrosis in deoxycorticosterone-acetate-salt hypertensive mice.
Experimental cell research, 2023
- Novel ANP (Atrial Natriuretic Peptide)-Based Therapy for Hypertension: The Promising Role of a Disease Mechanism Targeted Approach.
Hypertension (Dallas, Tex. : 1979), 2021
GHRP-6
- Growth hormone-releasing peptide 6 (GHRP-6) hydrogel for acute kidney injury therapy via metabolic regulation.
Journal of nanobiotechnology, 2025
- Growth hormone releasing peptide-6 (GHRP-6) prevents doxorubicin-induced myocardial and extra-myocardial damages by activating prosurvival mechanisms.
Frontiers in pharmacology, 2024
- [D-Lys3]-GHRP-6 exhibits pro-autophagic effects on skeletal muscle.
Molecular and cellular endocrinology, 2015
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